package cn.edu.scau.cmi.liuan.business;

import cn.edu.scau.cmi.liuan.business.*;
import cn.edu.scau.cmi.liuan.interProgramming.animal.*;
import cn.edu.scau.cmi.liuan.interProgramming.animal.cat.*;
import cn.edu.scau.cmi.liuan.interProgramming.animal.dog.*;

public class test {
	public static void main(String[] args)
	{
		Business animal = new Business();
		animal.setAnimal(new Dog());
		animal.sing();
		animal.setAnimal(new Cat());
		animal.sing();
	}
}
